Systolic murmurs are classified according to their time of occurrence , sound quality , and duration 根据其出现时间、声音性质及持续时间对收缩期杂音进行分类。
Sometimes audibility is other heart sounds or murmur , likely disease place causes want an attention 有时可听到其他心音或者杂音，要注重有可能是疾病所引起的。
It is an innocent finding , usually heard in the lower anterior portion of the neck 这种持续的低音调杂音起源于静脉血流速的增加，对健康无害，可在颈前下部听到。
Specification for calculation of noise disturbance effects of ac electrified railways on telecommunication lines 交流电气化铁道对电信线路杂音干扰影响的计算规程
Specification for calculation of noise disturbance effects of ac electrification railways on telecommunication lines 交流电气化铁道对电信线路杂音干扰影响的计算规程
Original tape had terrible noise with the audio , which could not be removed through numerous tries . hope it ' s acceptable 屡次尝试弄走录影带里原有的杂音，但不成功，敬希体谅。
Regurgitant murmurs are generally early diastolic whereas ventricular filling murmurs occur in mid and late diastole 回流性杂音一般出现于舒张早期，而心室充盈性杂音一般出现于舒张中晚期。
Losing and regaining the signal and the level of noise becomes another tool to measure a living space or architecture 讯号的强弱，出现与消失，和杂音的大小成为了另一个量度生活空间的工具。
